{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949138,-0.314860,0.000000,0.000000,0.116078,-0.349914,0.929562,0.000000,-0.292413,0.881473,0.370809,0.000000,-1865908.942827,5624747.696177,2350319.081243,1],    "boundingVolume": {    "region": [1.891051,0.379822,1.891159,0.379937,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77517.b3dm"}}}